How do you make your hair look thinner if you have long, thick hair?
Why on earth would you want to do that? They can use a razor and get a lot of the weight off or use a tool called "thing shears". Just go to a salon and they'll hook you up.
Shave half of it of, perhaps?
Straighten it. That usualy helps a little =)
there are alot of diffrent hairsprays like oilsheen that make your your hair look oily and thin
Get it thinned.
You can cut it short and get it thin
Get it thinned out at the salon